That Just Hurts

Reviewing my RSS feeds this morning, I see that Jesper Johansson has announced his resignation from Microsoft. He is going to a security position at Amazon.
Jesper has been a primary source for me in determining the best way to secure my Windows network. The book “Protect Your Windows Network From Perimeter to Data” by Jesper and Steve Riley is the first thing I turn to, followed by Microsoft’s Windows 2003 Security Guide (which he had a hand in), and then I look at Steve Fossen’s SANS course material.
Microsoft is losing a great resource. Although I’ve never even met Jesper, I feel like i”m losing a valued colleague.